*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #222536;
  --surface3: #2a2e42;
  --border: #2e3248;
  --border2: #3a3f5c;
  --text: #e8eaf6;
  --text2: #9da3c8;
  --text3: #6b7199;
  --accent: #7c6aff;
  --accent-hover: #9280ff;
  --accent-dim: rgba(124,106,255,0.15);
  --danger: #ff5c6a;
  --danger-dim: rgba(255,92,106,0.12);
  --radius: 8px;
  --radius-sm: 5px;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

html, body { height: 100%; overflow: hidden; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  line-height: 1.5;
}

/* ── Layout ── */
.app { display: flex; height: 100vh; overflow: hidden; }

/* ── Sidebar ── */
.sidebar {
  width: 240px;
  min-width: 240px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 14px 10px;
  border-bottom: 1px solid var(--border);
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 14px;
  color: var(--text);
}

.logo svg { color: var(--accent); }

.sidebar-search {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.search-input {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 6px 10px;
  font-size: 12px;
  font-family: var(--font);
  outline: none;
  transition: border-color 0.15s;
}
.search-input::placeholder { color: var(--text3); }
.search-input:focus { border-color: var(--accent); }

.template-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
}

.template-list::-webkit-scrollbar { width: 4px; }
.template-list::-webkit-scrollbar-track { background: transparent; }
.template-list::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 4px; }

.template-item {
  padding: 9px 14px;
  cursor: pointer;
  border-left: 3px solid transparent;
  transition: background 0.1s, border-color 0.1s;
}
.template-item:hover { background: var(--surface2); }
.template-item.active {
  background: var(--accent-dim);
  border-left-color: var(--accent);
}

.template-item-name {
  font-weight: 600;
  font-size: 12.5px;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.template-item-desc {
  font-size: 11px;
  color: var(--text3);
  margin-top: 1px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.loading-state, .empty-list {
  padding: 24px 14px;
  color: var(--text3);
  font-size: 12px;
  text-align: center;
}

/* ── Main ── */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg);
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 52px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
  gap: 12px;
}

.toolbar-left { min-width: 0; flex: 1; }

.template-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.template-desc {
  font-size: 11px;
  color: var(--text3);
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

/* ── Work area ── */
.work-area {
  flex: 1;
  display: flex;
  overflow: hidden;
}

.empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text3);
  text-align: center;
  padding: 40px;
}

.empty-state svg { opacity: 0.25; margin-bottom: 8px; }
.empty-state h2 { font-size: 18px; color: var(--text2); font-weight: 600; }
.empty-state p { font-size: 13px; max-width: 280px; }

/* ── Editor layout ── */
.editor-layout {
  flex: 1;
  display: flex;
  overflow: hidden;
}

/* ── Preview panel ── */
.preview-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-right: 1px solid var(--border);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  font-size: 11px;
  font-weight: 600;
  color: var(--text2);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  flex-shrink: 0;
}

.preview-controls { display: flex; gap: 4px; }

.zoom-btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text3);
  font-size: 10px;
  padding: 2px 7px;
  cursor: pointer;
  transition: all 0.15s;
  font-family: var(--font);
}
.zoom-btn:hover { border-color: var(--accent); color: var(--text); }
.zoom-btn.active { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }

.preview-viewport {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
  background:
    radial-gradient(circle, var(--border) 1px, transparent 1px);
  background-size: 20px 20px;
  background-color: var(--bg);
  padding: 40px;
}

.preview-scaler {
  position: relative;
  transform-origin: center center;
  transition: transform 0.2s ease;
}

#previewFrame {
  border: none;
  display: block;
  background: transparent;
}

/* ── Variables panel ── */
.variables-panel {
  width: 280px;
  min-width: 280px;
  background: var(--surface);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.variables-form {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.variables-form::-webkit-scrollbar { width: 4px; }
.variables-form::-webkit-scrollbar-track { background: transparent; }
.variables-form::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 4px; }

.var-field { display: flex; flex-direction: column; gap: 4px; }

.var-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text2);
  letter-spacing: 0.3px;
}

.var-name-tag {
  font-size: 10px;
  color: var(--text3);
  font-family: var(--font-mono);
}

.var-input {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 6px 9px;
  font-size: 12.5px;
  font-family: var(--font);
  outline: none;
  width: 100%;
  transition: border-color 0.15s;
}
.var-input:focus { border-color: var(--accent); }

input[type="color"].var-input {
  padding: 2px 4px;
  height: 32px;
  cursor: pointer;
}

.var-barcode-type {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 6px 9px;
  font-size: 12px;
  font-family: var(--font);
  outline: none;
  width: 100%;
  margin-bottom: 5px;
  cursor: pointer;
  transition: border-color 0.15s;
}
.var-barcode-type:focus { border-color: var(--accent); }

.bc-error {
  color: var(--danger);
  font: 12px var(--font);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  padding: 7px 14px;
  font-size: 12.5px;
}
.btn-primary:hover { background: var(--accent-hover); }

.btn-ghost {
  background: transparent;
  color: var(--text2);
  border: 1px solid var(--border);
  padding: 5px 11px;
  font-size: 12px;
}
.btn-ghost:hover { background: var(--surface2); color: var(--text); border-color: var(--border2); }

.btn-sm { padding: 5px 11px; font-size: 12px; }
.btn-xs { padding: 3px 8px; font-size: 11px; }

.btn.danger { color: var(--danger); border-color: var(--danger-dim); }
.btn.danger:hover { background: var(--danger-dim); }

/* ── Modal ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  width: 680px;
  max-width: 95vw;
  height: 640px;
  max-height: 92vh;
  min-width: 420px;
  min-height: 340px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
  resize: both;
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 { font-size: 15px; font-weight: 600; }

.modal-close {
  background: none;
  border: none;
  color: var(--text3);
  font-size: 22px;
  cursor: pointer;
  line-height: 1;
  padding: 0 4px;
  border-radius: 4px;
}
.modal-close:hover { color: var(--text); background: var(--surface2); }

.modal-body {
  flex: 1;
  min-height: 0;
  overflow: hidden;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal-body::-webkit-scrollbar { width: 4px; }
.modal-body::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 4px; }

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
}

.form-row { display: flex; flex-direction: column; gap: 5px; }
.form-row label { font-size: 11px; font-weight: 600; color: var(--text2); text-transform: uppercase; letter-spacing: 0.5px; }

.input {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 7px 10px;
  font-size: 13px;
  font-family: var(--font);
  outline: none;
  width: 100%;
  transition: border-color 0.15s;
}
.input:focus { border-color: var(--accent); }

/* ── Tabs ── */
.editor-tabs {
  display: flex;
  gap: 2px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0;
  margin-bottom: 0;
}

.tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text3);
  font-family: var(--font);
  font-size: 12.5px;
  font-weight: 500;
  padding: 6px 14px;
  cursor: pointer;
  transition: all 0.15s;
  margin-bottom: -1px;
}
.tab:hover { color: var(--text2); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

.tab-pane { display: none; flex-direction: column; gap: 8px; flex: 1; min-height: 0; }
.tab-pane.active { display: flex; }

.editor-hint {
  font-size: 11px;
  color: var(--text3);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
}
.editor-hint code {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 11px;
}

/* ── Code editor with syntax highlighting overlay ── */
.code-editor-wrap {
  position: relative;
  flex: 1;
  min-height: 140px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  overflow: hidden;
  transition: border-color 0.15s;
}
.code-editor-wrap:focus-within { border-color: var(--accent); }

/* Shared metrics — the textarea text must sit exactly over the highlight */
.code-editor,
.code-highlight {
  margin: 0;
  border: 0;
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  tab-size: 2;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: break-word;
  box-sizing: border-box;
  width: 100%;
  height: 100%;
}

.code-highlight {
  position: absolute;
  inset: 0;
  overflow: auto;
  color: #c9d1d9;
  pointer-events: none;
  z-index: 1;
}
.code-highlight code { font: inherit; }

.code-editor {
  position: absolute;
  inset: 0;
  background: transparent;
  color: transparent;
  caret-color: var(--text);
  outline: none;
  resize: none;
  overflow: auto;
  z-index: 2;
}
.code-editor::selection { background: rgba(124,106,255,0.35); }
.code-editor::placeholder { color: var(--text3); }

/* ── Variables: form / JSON view toggle ── */
.var-view-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.view-toggle { display: flex; flex-shrink: 0; }

.view-btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text3);
  font-family: var(--font);
  font-size: 11px;
  font-weight: 500;
  padding: 4px 14px;
  cursor: pointer;
  transition: all 0.15s;
  position: relative;
}
.view-btn:first-child { border-radius: var(--radius-sm) 0 0 var(--radius-sm); }
.view-btn:last-child { border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.view-btn + .view-btn { margin-left: -1px; } /* collapse the shared border */
.view-btn:hover { color: var(--text); }
.view-btn.active { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); z-index: 1; }

/* Variables tab fills the dialog and lets each view grow */
#varFormView {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}
#varEditor { flex: 1; min-height: 0; overflow-y: auto; }
#varFormView #addVarBtn { flex-shrink: 0; align-self: flex-start; }

#varJsonView {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.json-editor {
  width: 100%;
  flex: 1;
  min-height: 120px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: #c9d1d9;
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  outline: none;
  resize: none;
  tab-size: 2;
  transition: border-color 0.15s;
}
.json-editor:focus { border-color: var(--accent); }
.json-editor::placeholder { color: var(--text3); }

.json-error {
  flex-shrink: 0;
  color: var(--danger);
  font-size: 11px;
  font-family: var(--font-mono);
  margin-top: 6px;
  min-height: 14px;
}

/* Token colors */
.tok-comment  { color: #6a737d; font-style: italic; }
.tok-string   { color: #9ecbff; }
.tok-var      { color: #ffab70; font-weight: 600; }
.tok-color    { color: #79c0ff; }
.tok-number   { color: #79c0ff; }
.tok-selector { color: #7ee787; }
.tok-property { color: #d2a8ff; }
.tok-punct    { color: #8b949e; }
.tok-tag      { color: #7ee787; }
.tok-attr     { color: #d2a8ff; }

/* ── Variable editor rows ── */
.var-editor-row {
  display: grid;
  grid-template-columns: 1fr 1fr 90px 28px;
  gap: 6px;
  align-items: end;
  padding: 8px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.var-editor-row label {
  font-size: 10px;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 3px;
  display: block;
}

.var-editor-row .input, .var-editor-row select {
  font-size: 11.5px;
  padding: 5px 8px;
}

.var-editor-row select {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font);
  font-size: 11.5px;
  padding: 5px 8px;
  outline: none;
  width: 100%;
  transition: border-color 0.15s;
}
.var-editor-row select:focus { border-color: var(--accent); }

.remove-var-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text3);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 4px 7px;
  transition: all 0.15s;
  align-self: end;
}
.remove-var-btn:hover { background: var(--danger-dim); color: var(--danger); border-color: var(--danger-dim); }

/* ── Safe margin overlay ── */
.safe-margin-overlay {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
}

.safe-margin-overlay svg {
  display: block;
}

.safe-margin-control {
  position: relative;
}

.safe-margin-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text3);
  font-size: 10px;
  font-family: var(--font);
  padding: 2px 7px;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.safe-margin-btn:hover { border-color: var(--accent); color: var(--text); }
.safe-margin-btn.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

.safe-margin-popover {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 100;
  box-shadow: var(--shadow);
  white-space: nowrap;
}

.safe-margin-popover label {
  font-size: 10px;
  font-weight: 600;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.margin-size-input {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 4px 8px;
  font-size: 12px;
  font-family: var(--font);
  outline: none;
  width: 80px;
  transition: border-color 0.15s;
}
.margin-size-input:focus { border-color: var(--accent); }

.safe-margin-popover label span {
  color: var(--text3);
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}

.margin-opacity-input {
  width: 130px;
  accent-color: var(--accent);
  cursor: pointer;
}

/* ── Print styles ── */
@media print {
  body { background: white; }
  .app { display: block; }
  .sidebar, .toolbar, .variables-panel, .preview-controls, .panel-header { display: none !important; }
  .preview-viewport { background: white; padding: 0; display: block; }
  .preview-scaler { transform: none !important; }
  #previewFrame { width: 100%; height: 100vh; }
}